import multiprocessing as mp 
import os
import time 

#將要做的事封裝為函數
def th1():
    print(os.getppid(),"----",os.getpid())
    print('吃飯早飯')
    time.sleep(1)
    print('吃飯午飯')
    time.sleep(2)
    print('吃飯晚飯')
    time.sleep(3)

def th2():
    print(os.getppid(),"----",os.getpid())
    print("睡午覺")
    time.sleep(1)
    print("睡覺")
    time.sleep(3)

def th3():
    print(os.getppid(),"----",os.getpid())
    print("打豆豆")
    time.sleep(2)
    print("打豆豆")
    time.sleep(2)

#創建3個子進程,生成子進程對象
#將函數和進程進行關聯
p1 = mp.Process(target = th1)
p2 = mp.Process(target = th2)
p3 = mp.Process(target = th3)

#啟動進程讓其執行對應的函數事件
#該函數即為這個就進程內容
p1.start()
p2.start()
p3.start()

print("Parent PID:",os.getpid())

# 阻塞等對應子進程的退出,然後回收子進程
p1.join()
p2.join()
p3.join()

print("***********************")
# th1()
# th2()
# th3()
#1.導入模塊
#2.創建函數
#3.關聯函數
#4.啟動子進程函數
#5.回收子進程
 

利用multiprocessing創建多進程